CN104154857A - Low-power magneto-resistive angle sensor with compensation - Google Patents
Low-power magneto-resistive angle sensor with compensation Download PDFInfo
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- CN104154857A CN104154857A CN201410399834.4A CN201410399834A CN104154857A CN 104154857 A CN104154857 A CN 104154857A CN 201410399834 A CN201410399834 A CN 201410399834A CN 104154857 A CN104154857 A CN 104154857A
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Abstract
The invention provides a low-power magneto-resistive angle sensor with compensation, comprising a stator shell, a stator core, an excitation coil, a sine output coil, a cosine output coil, a sine compensation coil, a cosine compensation coil, a rotor lining, and a rotor core. The outer circumference of the rotor core is provided with toothed slots, and the rotor core is mounted on the rotor lining. The inner circumference of the stator core is provided with toothed slots, and the stator core is mounted in the stator shell. The excitation coil, the sine output coil, the cosine output coil, the sine compensation coil and the cosine compensation coil are wound on the stator core. The compensation coils can carry out error compensation adjustment on the output precision of the angle sensor. The stator core and the rotor core are machined through linear cutting after lamination of highly magnetic conductive material. The power consumption of the angle sensor can be reduced, the size can be reduced, and the precision can be improved. The low-power magneto-resistive angle sensor with compensation has the advantages of an error compensation function, low power consumption, small size, high precision, convenient processing and manufacture, and the like.
Description
Technical field
The present invention is applicable to the measurement of angle of fast rotational parts in the plant equipment such as gyroaccelerometer, particularly, relates to a kind of low-watt consumption magnetic resistive angular transducer with compensation.
Background technology
Reluctance type angular transducer generally adopts siliconized plate as the core material of stator core and rotor core.General employing punch die punching punching, be more manually overrided to form with mould, stator core and rotor core notch that the method is made are irregular, teeth groove low precision.For improving concentricity and ovality, often need to increase the mill processing of stator core inner circle and rotor core cylindrical, but fundamentally do not improve the teeth groove precision of stator core and rotor core.Use siliconized plate as core material, magnetic permeability is low, generally only adopts 400～500Hz frequency, reach same fan-out capability, needs the input current of magnetizing coil large.The magnetic permeability of general fe-Ni soft magnetic alloy is higher than siliconized plate, but due to the magnetic property counter stress sensitive of general iron-nickel alloy, affects the stability of angular transducer, therefore seldom adopts.Owing to becoming magnetizing coil and the output winding of magnetoresistive angle-sensor configuration, all embed in stator core slot, between coil, distributed capacitance is large, the stationary component producing in output winding causes the increase of zero-bit and quadrature error, can not meet the requirement of gyroaccelerometer to angle sensor accuracy.
Summary of the invention
The present invention to solve technical matters be: overcome the deficiencies in the prior art, provide a kind of low in energy consumption, volume is little, precision is high, the low-watt consumption magnetic resistive angular transducer of the band of convenient processing and manufacture compensation.
For solving the problems of the technologies described above, the technical solution used in the present invention comprises:
A kind of low-watt consumption magnetic resistive angular transducer with compensation, comprise stator case, stator core, magnetizing coil, sinusoidal output winding, cosine output winding, sinusoidal compensating coil, cosine compensating coil, rotor bushing and rotor core, wherein, described stator case is essentially annular; Described stator core substantially ringwise, is provided with a plurality of stator tooths equably on its internal ring wall, described stator core setting-in is fixed on the internal ring wall of described stator case; Described rotor core is annular, is provided with a plurality of rotor tooths on its external annulus; Described rotor bushing is the revolution body structure with cavity, and described rotor core suit is fixed on the excircle of described rotor bushing; Described magnetizing coil, sinusoidal output winding, cosine output winding, sinusoidal compensation winding, cosine compensation winding are sequentially successively wound on each tooth of described stator core, and, described magnetizing coil, as drive coil, receives the pumping signal of outside input; Described sinusoidal compensating coil composes in series first with the first fixed resistance and the first variable resistor head and the tail order and is connected in series loop; One end of described sinusoidal output winding is connected between described sinusoidal compensating coil and described the first variable resistor, and the other end of described sinusoidal output winding and described the first variable-resistance adjustable side are as two sinusoidal output terminals; Described cosine compensating coil composes in series second with the second fixed resistance and the second adjustable resistance head and the tail order and is connected in series loop; One end of described cosine output winding is connected between described cosine compensating coil and described the second adjustable resistance, and the described cosine output other end of winding and the adjustable side of described the second adjustable resistance are as two cosine output terminals; Described stator core and rotor core all adopt the rotation of fe-Ni soft magnetic alloy B1J95 sheet stock to laminate the moulding of rear line cutting processing, and after assembling puts in place, described rotor core is arranged in the ring of described stator core together with described rotor bushing, and has air gap between described rotor core and described stator core.
Preferably, described rotor bushing comprises and being linked in sequence and the first cylindrical portion, the second cylindrical portion and flange part that inner chamber communicates with each other, the external diameter of described the first cylindrical portion, the second cylindrical portion and flange part increases gradually, on the roof of described first cylindrical portion of connection of described the second cylindrical portion, be provided with a plurality of threaded holes, and a plurality of threaded hole is uniformly distributed round described the first cylindrical portion; Described rotor core suit is fixed on the excircle of described the second cylindrical portion, and the lower surface of described rotor core is resisted against on described flange part.
Preferably, the quantity of the stator tooth on described stator core is the twice of the rotor tooth quantity on described rotor core.
The present invention's advantage is compared with prior art:
1, in the present invention, owing to adopting the fe-Ni soft magnetic alloy B1J95 material of high permeability, make stator core, rotor core, compare with traditional silicon steel material, improved the magnetic permeability of medium frequency section, producing the required exciting curent of air-gap field intensity reduces, reduced power attenuation, exciting curent is reduced to 80～100mA from 120 original～150mA, so power-dissipation-reduced.Iron core thickness is reduced to 5～6mm from 8 original～10mm.Product axial dimension reduces;
2, stator core and rotor core adopt sheet stock rotation to be overrided to form, and by the teeth groove of line cutting processing stator core and rotor core, compare punch die punching, then the mode laminating by hand with mould, and in the present invention, the precision of teeth groove is improved;
3,, in conjunction with sine and cosine compensating coil, the output voltage amplitude that aligns cosine coil carries out the error of zero and quadrature error compensation, the precision of reluctance type angular transducer from original 2 ' bring up to be less than 1 '.In volume-diminished, improved the precision of product.
Accompanying drawing explanation
Fig. 1 is according to the axial, cross-sectional view of the low-watt consumption magnetic resistive angular transducer of band compensation of the present invention;
Fig. 2 is according to the connection diagram of magnetizing coil of the present invention, sinusoidal output winding, cosine output winding, sinusoidal compensating coil and cosine compensating coil;
Fig. 3 is the front view according to stator core of the present invention;
Fig. 4 is the front view according to rotor core of the present invention;
Fig. 5 is the coiling stretch-out view according to stator core of the present invention and each coil;
Fig. 6 is the structural representation according to rotor bushing of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the low-watt consumption magnetic resistive angular transducer of band compensation according to the present invention is further described in detail.
As shown in Fig. 1-Fig. 6, reluctance type angular transducer according to the present invention comprises stator case 1, stator core 2, magnetizing coil 3, sinusoidal output winding 4, cosine output winding 5, sinusoidal compensating coil 6, cosine compensating coil 7, rotor bushing 8 and rotor core 9.Wherein, stator case 1 is essentially annular (as shown in Figure 1, according to actual needs, can arrange in annular one end to projecting inward boss, so that the location of stator core in encircling in stator case).Stator core 2 substantially ringwise, is provided with a plurality of stator tooths (being teeth groove between adjacent teeth) equably on its internal ring wall.Stator core 2 setting-ins are fixed on the internal ring wall of stator case 1.Usually, can adopt the modes such as bonding, welding that stator core 2 is fixed on the internal ring wall of stator case 1.
Rotor core 9 is also annular, is provided with a plurality of rotor tooths on its external annulus.Conventionally, the quantity of the stator tooth on stator core 2 is 2 of rotor tooth quantity on rotor core
ndoubly, n is natural number.In this preferred embodiment, n gets 1.
Rotor bushing 8 is for having the revolution body structure of cavity.Rotor core 9 suits are fixed on the excircle of rotor bushing 8.Usually, can adopt the modes such as bonding, welding that rotor core 9 is fixed on the excircle of rotor bushing 8.
The structure of rotor bushing 8 is determined according to the structure of the axle of angle to be measured or miscellaneous part.In preferred embodiment as shown in Figure 6, rotor bushing 8 comprises and being linked in sequence and the first cylindrical portion 81, the second cylindrical portion 82 and flange part 83 that inner chamber communicates with each other.Wherein, the external diameter of the first cylindrical portion 81, the second cylindrical portion 82 and flange part 83 increases gradually.On the roof of connection first cylindrical portion 81 of the second cylindrical portion 82, be provided with a plurality of threaded holes 821, and a plurality of threaded hole 821 is uniformly distributed round the first cylindrical portion 81.The object that these threaded holes are set is the installation on axle for the ease of rotor bushing 8.Rotor core 9 suits are fixed on the excircle of the second cylindrical portion 82, and the lower surface of rotor core 9 is resisted against on flange part 83.
Stator core 2 and rotor core 9 all adopt the rotation of fe-Ni soft magnetic alloy B1J95 sheet stock to laminate the moulding of rear line cutting processing.Particularly, the material of stator core 2 and rotor core 9 is fe-Ni soft magnetic alloy B1J95.After assembling puts in place, rotor core 9 is arranged in the ring of stator core 2 together with rotor bushing 8, and has air gap between rotor core 9 and stator core 2.The size of this air gap is determined according to the requirement of actual condition.
Fe-Ni soft magnetic alloy B1J95 the initial segment magnetic permeability under 2KHz～10KHz frequency is better than silicon steel material, its initial permeability μ
0>=0.037H/m, reaches identical fan-out capability, and required exciting curent reduces, and the thickness of the thickness of stator core 2 and rotor core 9 is scaled-back also.After being laminated, sheet stock rotation passes through again the teeth groove of line cutting processing stator core 2 and rotor core 9, the precision of teeth groove is improved, can save the mill manufacturing procedure of stator core 2 inner circles and rotor core 9 cylindricals, in convenient manufacture, effectively reduce the volume of angular transducer, improved the precision of sensor.
The principle of such scheme is: fe-Ni soft magnetic alloy B1J95 compares siliconized plate, has the advantage that intermediate frequency the initial segment magnetic permeability is high, be difficult for getting rusty.With respect to general iron-nickel alloy material, there is hardness high, the advantage that magnetic property is stable.Under the magnetic structure condition identical with the magnetizing coil number of turn, obtaining identical air gap flux density needs less exciting curent compared with silicon steel material.Because Mid Frequency magnetic permeability is high, can improve fan-out capability by improving magnet excitation frequency.So employing B1J95 does stator core and rotor core material can effectively reduce exciting curent under the condition that does not reduce fan-out capability, dwindles iron core thickness, reduces volume.
Shown in Fig. 2 and Fig. 5, magnetizing coil 3, sinusoidal output winding 4, cosine output winding 5, sinusoidal compensation winding 6, cosine compensation winding 7 are sequentially successively wound on each tooth of stator core 2.Wherein, magnetizing coil 3, as drive coil, receives the pumping signal of outside input.Sinusoidal compensating coil 6 composes in series first with the first fixed resistance R1 and the first variable resistor R2 head and the tail order and is connected in series loop; One end of sinusoidal output winding 4 is connected between sinusoidal compensating coil 6 and the first variable resistor R2, and the sinusoidal output other end of winding 4 and the adjustable side of the first variable resistor R2 are as two sinusoidal output terminals.Cosine compensating coil 7 composes in series second with the second fixed resistance R3 and the second adjustable resistance R4 head and the tail order and is connected in series loop.One end of cosine output winding 5 is connected between cosine compensating coil 7 and the second adjustable resistance R4, and the cosine output other end of winding 5 and the adjustable side of the second adjustable resistance R4 are as two cosine output terminals.
So, after Fig. 2 wiring, by adjusting the first variable resistor R2, can make the error of zero of sensor minimum, adjust the second adjustable resistance R4, make the quadrature error of sensor minimum.
The principle of such scheme is: by regulating adjustable resistance, sinusoidal compensating coil and cosine compensating coil seal in sinusoidal output winding and cosine output winding, be equivalent to the stationary component that superposes in sine output and cosine output potential, when the stationary component of stack and the stationary component that brings of the distributed capacitance in output winding offset, it is minimum that the error of zero and quadrature error reach, and sensor accuracy is now best.
At this, it should be noted that, the content of not describing in detail in this instructions, is that description and the prior art that those skilled in the art pass through in this instructions can realize, and therefore, does not repeat.
The foregoing is only the preferred embodiments of the present invention, be not used for limiting the scope of the invention.For a person skilled in the art, do not paying under the prerequisite of creative work, can make some modifications and replacement to the present invention, within all such modifications and replacement all should be encompassed in protection scope of the present invention.
Claims (3)
1. the low-watt consumption magnetic resistive angular transducer with compensation, it is characterized in that, comprise stator case (1), stator core (2), magnetizing coil (3), sinusoidal output winding (4), cosine output winding (5), sinusoidal compensating coil (6), cosine compensating coil (7), rotor bushing (8) and rotor core (9), wherein
Described stator case (1) is essentially annular;
Described stator core (2) substantially ringwise, is provided with a plurality of stator tooths equably on its internal ring wall, described stator core (2) setting-in is fixed on the internal ring wall of described stator case (1);
Described rotor core (9) is annular, is provided with a plurality of rotor tooths on its external annulus;
Described rotor bushing (8) is for having the revolution body structure of cavity, and described rotor core (9) suit is fixed on the excircle of described rotor bushing (8);
Described magnetizing coil (3), sinusoidal output winding (4), cosine output winding (5), sinusoidal compensation winding (6), cosine compensation winding (7) are sequentially successively wound on each tooth of described stator core (2), and, described magnetizing coil (3), as drive coil, receives the pumping signal of outside input; Described sinusoidal compensating coil (6) composes in series first with the first fixed resistance (R1) and the first variable resistor (R2) head and the tail order and is connected in series loop; One end of described sinusoidal output winding (4) is connected between described sinusoidal compensating coil (6) and described the first variable resistor (R2), and the other end of described sinusoidal output winding (4) and the adjustable side of described the first variable resistor (R2) are as two sinusoidal output terminals; Described cosine compensating coil (7) composes in series second with the second fixed resistance (R3) and the second adjustable resistance (R4) head and the tail order and is connected in series loop; One end of described cosine output winding (5) is connected between described cosine compensating coil (7) and described the second adjustable resistance (R4), and the other end of described cosine output winding (5) and the adjustable side of described the second adjustable resistance (R4) are as two cosine output terminals;
Described stator core (2) and rotor core (9) all adopt the rotation of fe-Ni soft magnetic alloy B1J95 sheet stock to laminate the moulding of rear line cutting processing, and after assembling puts in place, described rotor core (9) is arranged in the ring of described stator core (2) together with described rotor bushing (8), and has air gap between described rotor core (9) and described stator core (2).
2. the low-watt consumption magnetic resistive angular transducer of band compensation according to claim 1, is characterized in that,
Described rotor bushing (8) comprises and being linked in sequence and the first cylindrical portion (81), the second cylindrical portion (82) and flange part (83) that inner chamber communicates with each other, the external diameter of described the first cylindrical portion (81), the second cylindrical portion (82) and flange part (83) increases gradually, on the roof of described first cylindrical portion of connection (81) of described the second cylindrical portion (82), be provided with a plurality of threaded holes (821), and a plurality of threaded hole (821) is uniformly distributed round described the first cylindrical portion (81);
Described rotor core (9) suit is fixed on the excircle of described the second cylindrical portion (82), and the lower surface of described rotor core (9) is resisted against on described flange part (83).
3. the low-watt consumption magnetic resistive angular transducer of band compensation according to claim 1, is characterized in that, the quantity of the stator tooth on described stator core (2) is the twice of the rotor tooth quantity on described rotor core (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410399834.4A CN104154857B (en) | 2014-08-13 | 2014-08-13 | Low-power magneto-resistive angle sensor with compensation |
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| CN201410399834.4A CN104154857B (en) | 2014-08-13 | 2014-08-13 | Low-power magneto-resistive angle sensor with compensation |
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| CN104154857B CN104154857B (en) | 2017-01-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847476A (en) * | 2017-03-24 | 2017-06-13 | 深圳市德西机电有限责任公司 | VR Two Speed Resolver |
| CN117439285A (en) * | 2023-12-21 | 2024-01-23 | 江苏巧思科技有限公司 | Magnetic core integrated rotary transformer, wireless power transmission system and design method |
| CN117470281A (en) * | 2023-12-27 | 2024-01-30 | 峰岹科技(深圳)股份有限公司 | Electromagnetic structure for angle sensor and angle sensor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201331328Y (en) * | 2008-12-26 | 2009-10-21 | 中国船舶重工集团公司第七○七研究所 | Barrel-shaped movable coil angle sensor |
| CN103414376B (en) * | 2013-07-25 | 2015-09-23 | 北京航天控制仪器研究所 | Built-in angular transducer integrative ultrasonic motor servo control system |
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2014
- 2014-08-13 CN CN201410399834.4A patent/CN104154857B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847476A (en) * | 2017-03-24 | 2017-06-13 | 深圳市德西机电有限责任公司 | VR Two Speed Resolver |
| CN117439285A (en) * | 2023-12-21 | 2024-01-23 | 江苏巧思科技有限公司 | Magnetic core integrated rotary transformer, wireless power transmission system and design method |
| CN117439285B (en) * | 2023-12-21 | 2024-03-01 | 江苏巧思科技有限公司 | Magnetic core integrated rotary transformer, wireless power transmission system and design method |
| CN117470281A (en) * | 2023-12-27 | 2024-01-30 | 峰岹科技(深圳)股份有限公司 | Electromagnetic structure for angle sensor and angle sensor |
| CN117470281B (en) * | 2023-12-27 | 2024-04-09 | 峰岹科技(深圳)股份有限公司 | Electromagnetic structure for angle sensor and angle sensor |
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Effective date of registration: 20221012 Address after: Room 411, 4th floor, building 3, yard 7, Shixing street, Shijingshan District, Beijing 100043 Patentee after: Beijing Aerospace Wanrun High Tech Co.,Ltd. Address before: 142 box 403, box 100854, Beijing, Beijing, Haidian District Patentee before: BEIJIGN INSTITUTE OF AEROSPACE CONTROL DEVICES |